INFO: task udevd:12835 blocked for more than 143 seconds.
Not tainted 5.16.0-rc5-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd state:D stack:26056 pid:12835 ppid: 2972 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
io_schedule+0xee/0x170 kernel/sched/core.c:8371
folio_wait_bit_common+0x4f2/0xa60 mm/filemap.c:1371
folio_wait_bit mm/filemap.c:1431 [inline]
folio_wait_locked include/linux/pagemap.h:851 [inline]
folio_wait_locked include/linux/pagemap.h:848 [inline]
wait_on_page_locked include/linux/pagemap.h:863 [inline]
wait_on_page_read mm/filemap.c:3428 [inline]
do_read_cache_page+0x986/0x11a0 mm/filemap.c:3471
read_mapping_page include/linux/pagemap.h:651 [inline]
read_part_sector+0xf6/0x5b0 block/partitions/core.c:728
adfspart_check_ICS+0x9d/0xc90 block/partitions/acorn.c:360
check_partition block/partitions/core.c:149 [inline]
blk_add_partitions block/partitions/core.c:613 [inline]
bdev_disk_changed+0x759/0x1100 block/partitions/core.c:699
blkdev_get_whole+0x206/0x2d0 block/bdev.c:684
blkdev_get_by_dev.part.0+0x5c6/0xc70 block/bdev.c:826
blkdev_get_by_dev+0x6b/0x80 block/bdev.c:860
blkdev_open+0x154/0x2e0 block/fops.c:501
do_dentry_open+0x4c8/0x1250 fs/open.c:822
do_open fs/namei.c:3426 [inline]
path_openat+0x1cad/0x2750 fs/namei.c:3559
do_filp_open+0x1aa/0x400 fs/namei.c:3586
do_sys_openat2+0x16d/0x4d0 fs/open.c:1212
do_sys_open fs/open.c:1228 [inline]
__do_sys_openat fs/open.c:1244 [inline]
__se_sys_openat fs/open.c:1239 [inline]
__x64_sys_openat+0x13f/0x1f0 fs/open.c:1239
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7ff9e4ed3697
RSP: 002b:00007ffc29ddfed0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 000055d0e9c464c0 RCX: 00007ff9e4ed3697
RDX: 00000000000a0800 RSI: 000055d0e9c80b80 RDI: 00000000ffffff9c
RBP: 000055d0e9c80b80 R08: 0000000000000001 R09: 00007ffc29df4080
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 000055d0e9c7f770 R14: 0000000000000001 R15: 000055d0e9c462c0
INFO: task syz-executor.1:21290 blocked for more than 143 seconds.
Not tainted 5.16.0-rc5-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:28144 pid:21290 ppid: 3640 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6385
__mutex_lock_common kernel/locking/mutex.c:680 [inline]
__mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740
blkdev_put+0x99/0x980 block/bdev.c:915
blkdev_close+0x6a/0x80 block/fops.c:515
__fput+0x286/0x9f0 fs/file_table.c:280
task_work_run+0xdd/0x1a0 kernel/task_work.c:164
get_signal+0x1bef/0x2220 kernel/signal.c:2624
arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fd571cfbe99
RSP: 002b:00007fd570671168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: fffffffffffffe00 RBX: 00007fd571e0ef60 RCX: 00007fd571cfbe99
RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000003
RBP: 00007fd571d55ff1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffce655b75f R14: 00007fd570671300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/26:
#0: ffffffff8bb812e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
2 locks held by getty/3288:
#0: ffff88807f0d0098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252
#1: ffffc90002b8e2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2113
1 lock held by udevd/12835:
#0: ffff88801b011118 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev.part.0+0x9b/0xc70 block/bdev.c:817
1 lock held by syz-executor.1/21290:
#0: ffff88801b011118 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0x99/0x980 block/bdev.c:915
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 26 Comm: khungtaskd Not tainted 5.16.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xc1d/0xf50 kernel/hung_task.c:295
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 6183 Comm: kworker/u4:9 Not tainted 5.16.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_nc_worker
RIP: 0010:__lock_acquire+0x398/0x54a0 kernel/locking/lockdep.c:4965
Code: ea 03 c1 e0 12 25 00 00 04 00 41 09 c6 41 8b 44 24 20 45 09 f7 45 09 cf 25 ff 1f 00 00 41 09 c7 48 b8 00 00 00 00 00 fc ff df <45> 89 7c 24 20 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08
RSP: 0018:ffffc900085ef9f0 EFLAGS: 00000006
RAX: dffffc0000000000 RBX: ffffffff8bb812e0 RCX: 0000000000000000
RDX: 1ffff11003ea016a RSI: 0000000000000004 RDI: ffff88801f500b54
RBP: 0000000000000000 R08: 1ffff11003ea0165 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88801f500b30
R13: ffff88801f500080 R14: 0000000000020000 R15: 000000000002002d
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e4af4849e8 CR3: 000000000b88e000 CR4: 00000000003506e0
Call Trace:
lock_acquire kernel/locking/lockdep.c:5637 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5602
rcu_lock_acquire include/linux/rcupdate.h:268 [inline]
rcu_read_lock include/linux/rcupdate.h:688 [inline]
batadv_nc_process_nc_paths.part.0+0xec/0x3c0 net/batman-adv/network-coding.c:691
batadv_nc_process_nc_paths net/batman-adv/network-coding.c:683 [inline]
batadv_nc_worker+0xce4/0xfa0 net/batman-adv/network-coding.c:739
process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298
worker_thread+0x658/0x11f0 kernel/workqueue.c:2445
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 03 c1 add %ecx,%eax
2: e0 12 loopne 0x16
4: 25 00 00 04 00 and $0x40000,%eax
9: 41 09 c6 or %eax,%r14d
c: 41 8b 44 24 20 mov 0x20(%r12),%eax
11: 45 09 f7 or %r14d,%r15d
14: 45 09 cf or %r9d,%r15d
17: 25 ff 1f 00 00 and $0x1fff,%eax
1c: 41 09 c7 or %eax,%r15d
1f: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
26: fc ff df
* 29: 45 89 7c 24 20 mov %r15d,0x20(%r12) <-- trapping instruction
2e: 0f b6 14 02 movzbl (%rdx,%rax,1),%edx
32: 48 89 f8 mov %rdi,%rax
35: 83 e0 07 and $0x7,%eax
38: 83 c0 03 add $0x3,%eax
3b: 38 d0 cmp %dl,%al
3d: 7c 08 jl 0x47